title: Out of equilibrium plasticity dynamics and the annealing of supersolidity in solid ⁴He.
abstract: We present a numerical study of a continuum plasticity field coupled to a Ginzburg-Landau model for superfluidity. The results suggest that a supersolid fraction may appear as a long-lived transient during the time evolution of the plasticity field at higher temperatures where both dislocation climb and glide are allowed. Supersolidity, however, vanishes with annealing. As the temperature is decreased, dislocation climb is arrested and any residual supersolidity due to incomplete annealing remains frozen. Our results may provide a resolution of many perplexing issues concerning a variety of experiments on bulk solid (4)He.
authors.affiliation: TIFR Centre for Interdisciplinary Sciences, 21 Brundavan Colony, Narsingi, Hyderabad 500075, India.
authors.forename: Debabrata
authors.initials: D
authors.lastname: Sinha
authors.forename: Surajit
authors.initials: S
authors.lastname: Sengupta
authors.forename: Chandan
authors.initials: C
authors.lastname: Dasgupta
authors.forename: Oriol T
authors.initials: OT
authors.lastname: Valls
mesh_terms: D004583:Electrons; D006371:Helium / Q000737:chemistry*; D008432:Mathematical Computing; D015233:Models, Statistical; D056004:Molecular Dynamics Simulation
chemical_list: D006371:Helium